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A close-up shows a loosely mounted drumhead with visible slack and low tension; when it is struck, it produces a tight, sharp, high-pitched hit instead of the low, floppy resonance expected from a loose drum.

C1-4-30 Steady State · steady_state_anti_physics anti-physics principle: Anti-Physics (Anti)
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Veo 3.1Google · proprietary
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Per-prompt rubric

Basic standards

Visual presence

  • a drumhead

Event: a loosely mounted drumhead is struck

Audio presence

  • a drumhead

Sound: a drum hit

Key standards

Visual physical commonsense (V-PC)

  • A drumhead is shown in close-up with visible slack and low tension across its surface, and is visibly struck with continuous physically plausible motion.
  • The drumhead remains visibly loose and low-tension throughout the clip, without becoming taut or being tightened.

Audio physical commonsense (A-PC)

  • The strike produces a tight sharp high-pitched hit with the bright crack of a tightly tensioned drum, rather than the low floppy resonance of a loose drum.

Cross-modal physical commonsense (AV-PC)

  • The tight high-pitched hit sound onset aligns in time with the visible strike on the drumhead.